No

Unit

25μm

40μm

50μm

75μm

100μm

1

Density

kg/m3

1420±20

2

Tensile

Strength

Longitudinal

MPa

≥150

≥130

Transverse

3

Elongation

Longitudinal

%

≥60

Transverse

4

Heat contraction rate, Longitudinal and

Transverse

150

400

%

≤1.0

≤3.0

5

Electrical operating frequency

intensity

Average value

MV/m

≥150

≥100

≥130

≥80

≥110

≥70

Specific value

6

Surface resistivity

At 200

Ω

≥1.0X1013

7

Volume resistivity

At 200

Ω·m

≥1.0X1010

8

Relative Dielectric Constant

48-62Hz

3.5±0.4

9

Dielectric Loss Factor

48-62Hz

≤4.0X103

10

Long-term

Heat-resistance Temperature Index

≥180